Automatic measuring apparatus for sawmills



April 20, 192 1,581,315

'o. A/JOHANSSON AUTOMATIC MEASURING APPARATUS FOR SAWMILLS Filed Kay 16, 1924 2 Sheets-Silesia 1 April20 .1926. 1,531,315

- o. A. JOHANSSQN 7 AUTOMATIC MEASURING AP PARATUS FOR SAWMILLS.

Filed May 16,1924 Z'She et'S-Sheat 2 inventor JTarZ 0.1.91 37020726607? residing in thecity of .dom of Sweden, have invented a new and 'fication.

ing or measuring or both of the number,

be used as an automatic apparatus for re side :nearest the log. Fig. 2

Patented Apr. 20, 1926.

I :KARLQSKABADDLF JonANssoN, orisrooxnonm,

AUTOMATIC'MEASTTRING AI'YPARATUS SAWMILL'S.

Applicationfiled May 16,1925 Serial No. 713,836.

ToaZZ whomrit may 0012067 721 :Be :it known that I, KARL OSKAR AnoLr' JomiNssoN, a subject of-fthe King of Sweden,

Stockholm and: Kinguseful Automatic Measuring Apparatus for Sawmills, of whichrthe following is a speci- This invention relates to 'an automatic counting or smeasurlng apparatus for countlength and eventually the diameter :of the logs, passing through .a frame sawing machine or the like.

Elf combined with a suitable multiplication device of a .known .kind and adjustable for different sawing speeds, the apparatus can cording directly :the volume of the lumber passing :through :the' machine.

The invention :is illustrated in the accompanying drawings, in :which Figure "-1 is a vertical section of the apparatus with "the protecting coverrcmoved,-and seen from the isra detail thereof, with the measuring :roller in a changed position. Fig. 3 is a side view of a modification of the coupling device between the measuring and :the registering apparatus with :the protecting rcover removed. Fig. 4 is a vertical elevation of a'modifica-tion of the measuring device, seen in the direction of the log. v

ln'F-ig. 1 is shown'alog, just-passin'gthe back :roller '1 -of --a frame sawing machine. The front end of the .log jnst 'hits:and-lowers a toothed roller 2, which is connected to a flexible shaft 13 by gears 14. The shaft 13 is "connected with :the sha ft 10, which :is coupled to the shaft of a length-recording device of a known kind (not shown) by a clutch-coupling 12, 16.

The toothed roller 2 turns in'one arm of a lever 3, the other arm of which is secured to a rod' 4, acting upon a slide-block 5, provided with a crankled slot 6, consisting of three horizontal slots, connected by two inclined slots. In the slot slides a pin 7 attached to a rod 8, which is firmly connected to the lower part 12 of the clutch coupling. To the top of the rod 8 is secured a suitable device, acting upon one arm of a lever 9, the other arm of which acts upon a rod 11, operating a number-recording de vice (not shown).

When the log has passed the roller 1, as

recording device.

in gear. its lowest position, and the clutch-coupling .tion,

2- downwards still =more, counteracted by the weight 15, whereby the pin? is forced into the highest part of theslot 6 andthero'd acting upon the number- 11 pushed down,

While the log during the sawingxis rest- .ingupon the roller 1,: the pin' 7 occupies its and the clutch-coupling is middle :positiOn,

the pin" 7 .is in lVhile running idle,

is out of gear; I

lIn rFigures-irand 4, 101 :is the upper, feed roller of the frame sawing machine, or one of them if "there are several, 102 'is a rod,

the lower end of which looselyenclosesthe shaft of the roller 101." When the shaft of 'the roller is raisedfrom its Ilowest posia spring 116 acting upon the rod 102 is compressed, thus striving to bring the shown in, Fig. 2, its-weight presses the roller shaft back to its former position. To the 0 with it one shank of a fork 104, secured to a shaft'105, turning in bearings, attached to a frame '106. The hub of the fork is, on onejside, provided with two recesses 107 and 108, and, between them, a curved-surface 109. Against this part pressed down by aspring, the opposite end of this rod operating a recording "device (not shown). The opposite end of the fork 104, relative to the shanks, is provided with an extension, like, of rounded shape or by a fork with such ends. The fork ends or the knob 11 5 engage a recess in one-part :of a clutchcoupling 113. or the like, one part of the coupling ating a recording device (not shown), and

provided with a spring 118: that acts upon the coupling, while the other part of the coupling is fastened to a shaft 112, secured terminated by a knob 1 15 or'the of the fork a rod 110 is A being attached to a shaft 114, operto the flexible shaft 111, that is connected to e also ralsed, so that the projection of the u "ymw sleeve, attached to the rod 103, strikes the upper shank of the fork 104 and turns the fork, whereby the rod 110 is raised along the curved surface 109 and removed from the recess 107 to the recess 108. As the rod 110 thus is being raised, it operates the counting device, recording one log. Simultaneously the knob 115 has pulled the upper part of the coupling 113 with the shaft 114 downwards into gear with the lower part of the coupling, whereby the shaft 114, acting upon the recording device, will rotate with the same speed as the shaft of the roller 101.

At the end of the sawing operation the roller 101 falls down against its support, the projection of the said sleeve hits the lower shank of the fork 104, turning the same. The rod 110 is then lowered following the curve 109 back to its former position in the lower recess 107. At the same time the knob 115 disrupts the connection between the shafts 111 and 114.

A continued rotation of the roller 101 will thus not be re istered by the recording device, operated by the shaft 114.

If, in a compound or integrating registrating apparatus, the rod 110 acts upon one part indicating one dimension (diameter or height), and the shaft 114 acts upon another .part indicating another dimension (length), it is apparent that the registrating apparatus will directly indicate the volume of the passing lumber, as in the registrating apparatus (for round lumber) the motion of the shaft 110 can be transformed in the desired ratio to give the area of the log, and this quantity in the usual way be multiplied with the length indicated by the shaft 114, thus directly showing the volume of the lui ber. As to lumber with parallel surfaces (scantlings), a couple of rollers movable at right angles to the roller 101 may be provided, acting upon a shaft indicating the horizontal dimension.

The apparatus may also be used for measuring other material than lumber.

The forms illustrated in the drawings do only exemplify this invention, which is susceptible of various changes within wide limits as to details of construction etc., and the rights are herein reserved to make such changes as properly fall within the scope of the appended claims.

I claim:

1. An automatic measuring and recording device for saw mills and the like comprising a rotary member adapted for engage ment by the moving lumber, a shaft connected to the rotary member for rotation therewith and adapted for attachment to a length-recording device, a rod adapted for connection to a munber-recor-ding device, and an operative connection between said rod and rotary member, adapted for actuation upon shifting of the rotary member due to the pressure of a moving log thereon.

2. An apparatus according to claim 1 in which the rotary member consists of a feed roller adapted to be raised by the passing log.

8. An automatic measuring and recording device comprising a rotary member adapted for actuation by the moving lumber, a connecting rod attached to said roller and adapted for movement upon shifting of said roller, a frame, a fork pivoted in said frame and connected to said rod, said fork being formed with two recesses and a curved surface between said recesses, a second rod adapted to operate a number-recording de vice, one end of said rod being adapted to enter said recesses and to ride on the curved surface.

4. An apparatus according to claim 3 further characterized by a shaft journaled in the frame and adapted to operate a lengthrecording device, an operative connection between said shaft and the feed-roller where by the shaft is rotated upon rotation of the roller, a clutch interposed in said shaft, said clutch being connected to the pivoted fork. In witness whereof I have hereunto set my hand.

KARL OSKAR ADOLF JOHANSSON. 

